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21 cze 2013 · The 3.0L and 3.6L SIDI engines use a direct injection fuel system that operates at very high fuel pressures. A direct injection fuel system produces a rapid clicking and ticking sound that can be heard from the engine compartment.
23 lut 2022 · I have a 2016 with a 3.6 l with a ticking noise at around 7-800 rpm then goes away as soon as i accelerate it or go back to idle. I read a lot of stories and a bulletin about the high pressure fuel pump causing it.
29 sie 2022 · The valve springs on the valves that are open when the engine is stopped compress the hydraulic lifters. When engine is started those valves will clatter momentarily until the oil pressure fills those lifters.
27 sty 2018 · A loud ticking or rattle sound may be heard coming from the engine compartment on some 2020-2021 Enclave and Traverse models equipped with the 3.6L V6 engine (RPO LFY). The sound may be caused by pressure pulsations in the purge solenoid tube that occur when the purge solenoid is commanded on.
18 paź 2019 · Owners of 2017-2019 GM vehicles, such as GMC Canyon and Acadia vehicles equipped with a 3.6L engine, may complain about a rattle, tick or knock type noise. This may also be accompanied by DTC P0300, P0302 or P0305 on the active fuel management system (AFM) cylinders.
The 3.0L and 3.6L SIDI engines use a direct injection fuel system that operates at very high fuel pressures. A direct injection fuel system produces a rapid clicking and ticking sound that can be heard from the engine compartment. The sound is more evident when outside around the vehicle or when the hood is open. The
8 wrz 2021 · 1. Start the vehicle and listen for a tick noise. • If a tick noise is present, proceed to the next step. • If a tick noise is NOT present after running engine for at least 5 to 7 minutes, release the vehicle back to the customer. 2. Drive the vehicle through the DFM modes. 3. Check for any misfire DTCs and record:
